CN203769880U

CN203769880U - Three-way catalytic silencer

Info

Publication number: CN203769880U
Application number: CN201420168979.9U
Authority: CN
Inventors: 时光; 汪澜; 孟然; 袁正贵; 冯胜平
Original assignee: CHENGDU MUJIE TECHNOLOGY Co Ltd
Current assignee: CHENGDU MUJIE TECHNOLOGY Co Ltd
Priority date: 2014-04-09
Filing date: 2014-04-09
Publication date: 2014-08-13
Anticipated expiration: 2024-04-09

Abstract

The utility model relates to a three-way catalytic silencer which comprises an air inlet pipe (1), an air outlet pipe (2) and a silencer body (10). The air inlet pipe (1) and the air outlet pipe (2) are arranged at the two ends of the silencer body (10) respectively. A sealed cavity A (3), a sealed cavity B (4) and a sealed cavity C (5) are arranged from one end of the air inlet pipe (1) in the silencer body (10) in sequence. The cavity A (3) is communicated with the air inlet pipe (1). The cavity A (3) is communicated with the cavity C (5) through a pipeline (6). The cavity C (5) and the cavity B (4) are communicated through a pipeline (6). The cavity B (4) and the air outlet pipe (2) are communicated through a pipeline (6). A plurality of through holes (8) are formed in the side wall of the middle portion of the pipeline (6). The three-way catalytic silencer has the advantages of being compact in structure, good in silencing effect and long in service life.

Description

A kind of three-element catalyzing muffler

Technical field

The utility model relates to a kind of exhaust gas muffler device, particularly a kind of three-element catalyzing muffler.

Background technique

The vent systems of state's IV gas engine passenger vehicle is made up of exhaust bronchus, exhaust expansion bellows, three-way catalytic converter, baffler and the tailpipe of connecting engine relief opening at present.In three-way catalytic converter, rise in the catalyst carrier of catalysis with the aperture that fills catalyzer, tail gas reacts during by aperture under the effect of catalyzer, thereby reduces the CH in gas engine tail gas ₄, the harmful gas content such as CO, ensure that the tail gas being discharged in atmosphere reaches state's IV standard.

Baffler utilization causes that by sudden change or the bypass resonant cavity etc. of pipeline section the change of impedance produces the reflection of acoustic energy, interference in propagation of sound process, or utilize sound absorbing cotton to absorb the noise in exhaust, thereby reduce exhaust sound to external radiation, reach noise reduction object.

Baffler of the prior art mostly is the baffler in single chamber, and erasure effect is bad, is subject to the impact of high-temperature tail gas after three-element catalytic simultaneously, and working life is low.

Model utility content

The purpose of this utility model is to overcome the shortcoming of prior art, and the three-element catalyzing muffler of a kind of compact structure, good muffling effect and long service life is provided.

The purpose of this utility model is achieved through the following technical solutions: a kind of three-element catalyzing muffler, it comprises suction tude, steam outlet pipe and muffler body, suction tude and steam outlet pipe are separately positioned on the two ends of muffler body, described muffler body inside sets gradually Packed A chamber, B chamber and C chamber from suction tude one end, A chamber is communicated with suction tude, pipeline communication is also passed through with C chamber in A chamber, and C chamber and B chamber are by pipeline communication, and pipeline communication is also passed through with steam outlet pipe in B chamber; On the sidewall at described pipeline middle part, offer multiple through holes.

In described A chamber, B chamber and C chamber, be provided with polylith insulation board perpendicular to pipeline.

The two ends of described pipeline are all provided with filtrating equipment.

The utlity model has following advantage:

1, the utility model is simple in structure, compact, easy for installation.

2, resonant cavity and pipeline have been increased, in the time propagating, there is reflection and interfere in sound wave, reduce acoustic energy and reach noise reduction object, the middle part of pipeline is porous structure, in the time that sound wave enters pipeline, part acoustic energy rubs and changes into thermal energy consumption and dissipate in the hole of porous, make to weaken by the sound wave of baffler, in cavity, be also provided with insulation board, absorb acoustic energy and reach noise reduction object, the two ends of pipeline are provided with filtrating equipment, and tail gas is done to further purification.

3, cavity and pipeline all adopt the stainless steel material of corrosion-and high-temp-resistant, can stand 500 DEG C～700 DEG C high-temperature exhaust airs, ensure that baffler does not damage, do not lose erasure effect, promote erasure effect, increase the service life.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of pipeline;

In figure: 1-suction tude, 2-steam outlet pipe, 3-A chamber, 4-B chamber, 5-C chamber, 6-pipeline, 7-insulation board, 8-through hole, 9-filtrating equipment, 10-muffler body.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described, but protection domain of the present utility model is not limited to the following stated.

As shown in Figure 1, a kind of three-element catalyzing muffler, it comprises suction tude 1, steam outlet pipe 2 and muffler body 10, suction tude 1 and steam outlet pipe 2 are separately positioned on the two ends of muffler body 10, described muffler body 10 inside set gradually Packed A chamber 3, B chamber 4 and C chamber 5 from suction tude 1 one end, and A chamber 3 is communicated with suction tude 1, and A chamber 3 is also communicated with by pipeline 6 with C chamber 5, C chamber 5 is communicated with by pipeline 6 with B chamber 4, and B chamber 4 is also communicated with by pipeline 6 with steam outlet pipe 2; As shown in Figure 2, on the sidewall at described pipeline 6 middle parts, offer multiple through holes 8.

In described A chamber 3, B chamber 4 and C chamber 5, be provided with polylith insulation board 7 perpendicular to pipeline.

The two ends of described pipeline 6 are all provided with filtrating equipment 9, the middle part sidewall of pipeline 6 is porous structure, the two ends of pipeline 6 are all provided with filtrating equipment 9, in the time that sound wave enters pipeline 6, part acoustic energy rubs and changes into thermal energy consumption and dissipate in the hole of porous, make to weaken by the sound wave of baffler, the two ends of pipeline 6 are provided with filtrating equipment 9, and tail gas is done to further purification

Pipeline 6 and muffler body 10 adopt the stainless steel material of corrosion-and high-temp-resistant, can stand 500 DEG C～700 DEG C high-temperature exhaust airs, ensure that baffler does not damage, do not lose erasure effect, promote erasure effect, increase the service life.

Working procedure of the present utility model is: vehicle exhaust enters A chamber 3 through suction tude 1, enter C chamber 5 by pipeline 6, enter B chamber 4 by pipeline 6 again, then pass through pipeline 6 through steam outlet pipe 2, enter tailpipe, in process, greatly promoted erasure effect through multiple resonant cavities, pipeline 6 and insulation board 7.

Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, do not departing under the prerequisite of the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims

1. a three-element catalyzing muffler, it comprises suction tude (1), steam outlet pipe (2) and muffler body (10), suction tude (1) and steam outlet pipe (2) are separately positioned on the two ends of muffler body (10), it is characterized in that: described muffler body (10) is inner sets gradually Packed A chamber (3) from suction tude (1) one end, B chamber (4) and C chamber (5), A chamber (3) is communicated with suction tude (1), A chamber (3) is also communicated with by pipeline (6) with C chamber (5), C chamber (5) is communicated with by pipeline (6) with B chamber (4), B chamber (4) is also communicated with by pipeline (6) with steam outlet pipe (2), on the sidewall at described pipeline (6) middle part, offer multiple through holes (8).

2. a kind of three-element catalyzing muffler according to claim 1, is characterized in that: in described A chamber (3), B chamber (4) and C chamber (5), be provided with polylith insulation board (7) perpendicular to pipeline.

3. a kind of three-element catalyzing muffler according to claim 1, is characterized in that: the two ends of described pipeline (6) are all provided with filtrating equipment (9).